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附生杜鹃 fushengdujuan
Synonyms:
Rhododendron notatum Hutch.
Rhododendron atentsiense Hand.-Mazz.

被子植物门 Angiospermae
双子叶植物纲 Dicotyledoneae
合瓣花亚纲 Sympetalae
杜鹃花目 Ericales
杜鹃花科 Ericaceae
杜鹃属 Rhododendron
相关名称 Common Names
拉丁名
Rhododendron dendricola Hutch.
中文名
附生杜鹃
拼音
fushengdujuan
异名
Rhododendron notatum Hutch.
Rhododendron atentsiense Hand.-Mazz.
文献 Literature
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描述 Description

28.附生杜鹃(云南植物志)图版10:1-2

Rhododendron dendricola Hutch. in Not. Bot. Gard, Edinb. 12: 60. 1919; id. in Stevenson, Spec. Rhodod. 460. 1930; Cullen in Not. Bot. Gard. Edinb. 39: 48. 1980; Davidian. Rhodod. Spec. 1: 238. 1982;云南植物志4: 479. 图版130, 1-3. 1986;横断山区维管植物下册1423. 1994.——R. notatum Hutch. in Not. Bot. Gard. Edihb. 16: 177. 1931. ——R. atentsiense Hand. -Mazz. in Anz. Akad. Wiss. Wien, 18: 14. 1921.

灌木,高1-3.5米,有时附生。幼枝绿色,细长,疏被褐色或褐红色腺鳞,老枝灰色,鳞片渐脱落。叶聚生枝条上部,大小不一,长圆状椭圆形或倒卵状椭圆形,长7-12厘米,宽2-4.5厘米,顶端钝,突尖,或有时锐尖,基部渐狭,有时稍钝圆,上面疏生褐色鳞片,下面粉绿色,密被红褐色鳞片,鳞片大小略不相等,相距小于直径或为直径的1-4倍,中脉在上面略下陷或近于平坦,在背面突起,侧脉约8对,纤细,在两面不明显;叶柄长0.5-1.3厘米,疏被鳞片。花序顶生,有花2-3朵,伞形着生;花梗长约1厘米,密被鳞片;花萼不发育,环状,密生鳞片,无睫毛;花冠芳香,宽漏斗状,长7厘米,白色带淡红色晕,内面基部有黄色斑块,5裂至花冠的1/3,裂片圆形,开展,花冠外面被鳞片,筒部被灰白微柔毛;雄蕊10,不等长,长度达花冠裂片中部,花丝下部被柔毛;子房6室,密被鳞片,花柱近于与花冠等长,下半部疏被鳞片。蒴果长圆状卵形,长1.5-2厘米,密被褐色鳞片。花期4-5月,果期5-11月。

产云南西北部(贡山、福贡、碧江)。生于杂木林中岩石上或陡岩灌丛中,有时附生于林中树上,海拔1 350-1 900米。缅甸北部也有。

本种叶背面鳞片的疏密程度颇有变异,但通常所见相距均大于其直径,偶尔在同一植株上可见到相距小于其直径的。

知识共享:署名-非商业性使用-禁止演绎 1999《中国植物志》第57(1)卷 044页 PDF

Shrubs, sometimes epiphytic, 1–3.5 m tall; old branches gray, less scaly; young shoots green, thin and long, sparsely brown or brownish red scaly. Petiole 5–13 mm, sparsely scaly; leaf blade oblong-elliptic or obovate-elliptic, 7–12 × 2–4.5 cm; base narrow to rounded; apex obtuse, acute, apiculate; abaxial surface pinkish green, scales less than, or 1–4 × their own diameter apart, unequal, reddish brown; adaxial surface sparsely scaly; midrib flat raised abaxially, slightly concave adaxially; lateral veins 8-paired, thin, inconspicuous on both surfaces. Inflorescence terminal, umbellate, 2- or 3-flowered. Flowers fragrant. Pedicel ca. 1 cm, densely scaly; calyx undeveloped, circular, densely scaly; corolla broadly funnelform, white tinged with pale red, ca. 7 cm, tube gray-white-pubescent; stamens 10, unequal, half as long as corolla lobes; filaments pubescent below; ovary 6-locular, densely scaly; style as long as corolla, sparsely scaly below. Capsule cylindric-ovoid, 15–20 mm, densely brown-scaly. Fl. Apr–May, fr. May–Nov.

Mixed forests, thickets, rocks, sometimes epiphytic on trees; 1300–1900 m. SE Xizang, NW Yunnan [NE India, N Myanmar].

Rhododendron atentsiense may not be a synonym of R. dendricola. The calyx lobes of the former taxon are comparatively well developed, up to 5 mm, and they are clearly ciliate. The type specimen of R. atentsiense is said to have been collected at close to 4000 m, which is assumed to be an error.

知识共享:署名-非商业性使用-禁止演绎 FOC Vol.14PDF
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